Has anyone else faced this issue? If so, have you found a way to determine the exact cause(s)? I'm getting the error randomly when running a particular task that runs fine in v10. The generic message isn't consistent 100% of the time on the same step either.

The occurrence has been primarily on one workflow but it has randomly occurred with others. The workflow it occurs on most only has one task. The task has 100+ steps and involves a lot of looking for specific characters such as "," and using their position to set index positions in a file. I tried to use the AMError conditions to isolate the errors but was unsuccessful. I would see the errors on step x running from task builder, then step y on the second run and even on step z when running from WFB or a schedule. I eventually used regular expressions to look for the text items differently in this one case.